It's not 'objectively better' to be honest. Offering two ways of doing the same thing can lead to a non-uniform codebase, and can lead to people being 'experts'

It's not 'objectively better' to be honest. Offering two ways of doing the same thing can lead to a non-uniform codebase, and can lead to people being 'experts' in functional and others being experts in procedural. And at some point, the procedural guys will get a mindfuck reading the functional people their code. (We had something similar happen).